Originally posted by: AbsoluteDestiny
If you had more than 3 sources couldn't you do two TooTs and then TooT the TooTs?

Yeah, you could, but I'm not sure you get to the same place, do you? If you have five sources, say, then isn't an average of five better than an average of 123 and 345, say? Only three sources are needed to remove disc-specific junk; after that, I think all you really need is a clever averaging arrangement.

Time to crack my old statistics text, I think... sigma, here I come.